Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Magnetism01:30

Magnetism

6.3K
Magnets are commonly found in everyday objects, such as toys, hangers, elevators, doorbells, and computer devices. Experimentation on these magnets shows that all magnets have two poles: one is labeled north (N) and the other south (S). Magnetic poles repel if they are alike and attract if unlike. Moreover, both poles of a magnet attract unmagnetized pieces of iron.
An individual magnetic pole cannot be isolated. No matter how small, every piece of a magnet contains a north pole and a south...
6.3K
Potential Due to a Magnetized Object01:24

Potential Due to a Magnetized Object

263
Magnetic dipoles in magnetic materials are aligned when placed under an external magnetic field. For paramagnets and ferromagnets, dipole alignment occurs in the direction of the magnetic field. However, the dipoles align opposite to the field in the case of diamagnets. This state of magnetic polarization due to the external field is called magnetization. Magnetization is defined as the dipole moment per unit volume. It plays a similar role to polarization in electrostatics.
The vector...
263
Ferromagnetism01:31

Ferromagnetism

2.4K
Materials like iron, nickel, and cobalt consist of magnetic domains, within which the magnetic dipoles are arranged parallel to each other. The magnetic dipoles are rigidly aligned in the same direction within a domain by quantum mechanical coupling among the atoms. This coupling is so strong that even thermal agitation at room temperature cannot break it. The result is that each domain has a net dipole moment. However, some materials have weaker coupling, and are ferromagnetic at lower...
2.4K
Paramagnetism01:30

Paramagnetism

2.5K
Paramagnets are materials with unpaired electrons that possess a finite magnetic moment. In the absence of a magnetic field, these moments are randomly oriented, and thus the net moment is zero. Under an external field, a torque acting on the moments tends to align them along the field's direction. However, the random thermal motion of electrons produces a torque opposite to the external field and tries to disorient the moments. These two competing effects align only a few moments along the...
2.5K
Diamagnetism01:26

Diamagnetism

2.4K
Materials consisting of paired electrons have zero net magnetic moments. However, when these materials are placed under an external magnetic field, the moments opposite to the field are induced. Such materials are called diamagnets. Diamagnetism is the response of the diamagnets when placed in an external magnetic field.
Diamagnetism was discovered by Anton Brugmans in 1778 when he observed that bismuth gets repelled by magnetic fields, thus theorizing that diamagnets get repelled by magnets....
2.4K
Atomic Nuclei: Nuclear Spin State Overview01:03

Atomic Nuclei: Nuclear Spin State Overview

879
NMR-active nuclei have energy levels called 'spin states' that are associated with the orientations of their nuclear magnetic moments. In the absence of a magnetic field, the nuclear magnetic moments are randomly oriented, and the spin states are degenerate. When an external magnetic field is applied, the spin states have only 2 + 1 orientations available to them. A proton with = ½ has two available orientations. Similarly, for a quadrupolar nucleus with a nuclear spin value of...
879

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Unraveling Enhanced Superconductivity in Single-Layer FeSe through Substrate Surface Terminations.

Nano letters·2025
Same author

Highly Efficient Spin-Orbit Torque Switching Using Bulk-Insulating Topological Insulator Bi<sub>2</sub>Se<sub>3</sub>.

Nano letters·2025
Same author

Altermagnetism from coincident Van Hove singularities: application to κ-Cl.

Nature communications·2025
Same author

Anisotropic Response of Defect Bound States to the Magnetic Field in Epitaxial FeSn Films.

Nano letters·2025
Same author

Revealing the Hidden Spin-Polarized Bands in a Superconducting Tl Bilayer Crystal.

Nano letters·2023
Same author

Giant Periodic Pseudomagnetic Fields in Strained Kagome Magnet FeSn Epitaxial Films on SrTiO<sub>3</sub>(111) Substrate.

Nano letters·2023

Related Experiment Video

Updated: Jun 8, 2025

Scanning SQUID Study of Vortex Manipulation by Local Contact
06:53

Scanning SQUID Study of Vortex Manipulation by Local Contact

Published on: February 1, 2017

6.8K

Spin-orbit enabled unconventional Stoner magnetism.

Yue Yu1, Tatsuya Shishidou1, Shuntaro Sumita2,3,4

  • 1Department of Physics, University of Wisconsin, Milwaukee, WI 53201.

Proceedings of the National Academy of Sciences of the United States of America
|November 8, 2024
PubMed
Summary

We discovered a new "spinless" pseudospin symmetry in certain materials that prevents coupling to magnetic fields. This leads to novel magnetic states and eliminates paramagnetic limiting in superconductors.

Keywords:
magnetic Pomeranchuk instabilitynonsymmorphic space groupspin-triplet superconductivityspin–orbit coupling

More Related Videos

Chemical Vapor Deposition of an Organic Magnet, Vanadium Tetracyanoethylene
08:25

Chemical Vapor Deposition of an Organic Magnet, Vanadium Tetracyanoethylene

Published on: July 3, 2015

11.5K
Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains
07:42

Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains

Published on: July 20, 2022

2.6K

Related Experiment Videos

Last Updated: Jun 8, 2025

Scanning SQUID Study of Vortex Manipulation by Local Contact
06:53

Scanning SQUID Study of Vortex Manipulation by Local Contact

Published on: February 1, 2017

6.8K
Chemical Vapor Deposition of an Organic Magnet, Vanadium Tetracyanoethylene
08:25

Chemical Vapor Deposition of an Organic Magnet, Vanadium Tetracyanoethylene

Published on: July 3, 2015

11.5K
Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains
07:42

Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains

Published on: July 20, 2022

2.6K

Area of Science:

  • Condensed Matter Physics
  • Materials Science
  • Quantum Magnetism

Background:

  • The Stoner instability is crucial for understanding metallic ferromagnets, involving Coulomb repulsion, Pauli exclusion, and spin degeneracy.
  • In materials with spin-orbit coupling, fermionic spin generalizes to pseudospin, usually assumed to share spin's symmetry properties.

Purpose of the Study:

  • To identify a distinct symmetry of pseudospin that prevents its coupling to a Zeeman field.
  • To explore the implications of this 'spinless' pseudospin property on magnetism and superconductivity in specific nonsymmorphic space groups.

Main Methods:

  • Theoretical identification of a novel pseudospin symmetry.
  • Analysis of Fermi surfaces and Coulomb repulsion effects.
  • Investigation of implications for magnetic instabilities and superconducting properties.

Main Results:

  • A 'spinless' pseudospin symmetry was identified, forbidding coupling to Zeeman fields in five nonsymmorphic space groups.
  • Stoner instabilities driven by this pseudospin lead to novel magnetic states: time-reversal breaking, vanishing magnetization, noncollinear structures, and momentum-dependent spin-splittings.
  • This spinless pseudospin eliminates paramagnetic limiting in superconductors across all pairing symmetries and field orientations.

Conclusions:

  • The discovered 'spinless' pseudospin symmetry fundamentally alters magnetic and superconducting behaviors.
  • This property enables new types of magnetic orders and enhances superconducting critical fields.
  • Potential applications exist in materials like UCoGe and NiS[Formula: see text]Se[Formula: see text].